微波消融治疗肝癌中的若干热学问题

Some Thermal Problems in Microwave Ablation Therapy for Hepatocellular Carcinoma

摘要: 针对微波消融治疗肝癌中遇到的一些热学问题进行了分析和讨论,对肝组织对微波的比吸收率的确定方法、温度场的数值模拟、单一微波源形成的凝固区大小和形状、分时控制的多源凝固区组合方法等进行了研究.结果表明,模拟结果与实测凝固区有良好的一致性,采用分时控制的多源凝固区组合技术能实现肿瘤的适形治疗.

Abstract: Some thermal problems in microwave ablation therapy for hepatocellular carcinoma were analyzed and discussed. The specific absorption rate (SAR) measurement in liver tissue, numerical simulation on temperature field, size and shape of the ablation area in a single microwave antenna, combination method of the ablation area in multi-antennas for alternative heating pattern were discussed. The coagulation area between the simulations and actual measured results showed good correspondence. Method of combined coagulation area for alternative heating pattern can achieve adaptive therapy for the cancer.